The light on the electronics switch is likely a miswiring on the switch itself, its kind of guess and check but you may be able to get a pinout for the switch itself if need be. I just kept moving the wire locations on the switch until it was happy. Anchor light switch is prob the same, just move the wire to the other side of the switch or you can put a multimeter to ground and use the other end to find out where 12v is when switched on and make sure its 0V when switched off, if its always 12v on all the switching pins then its likely a frozen switch. Your electronics switch (if its like mine) powers the radio box on your t top, my guess is you are getting power from there for your spreader lights and the switch at the panel switches ground instead of 12v? Alternatively the 12v going to your spreader light switch is coming from the elctronics switch (miswire) you can check this at the switch, if theres not a continuous row at the breaker of 12V being jumped switch to switch then thats your issue, also if you have a bad breaker there the PO may have just bypassed it with power from the electronics switch which would be fused and likely enough juice for your spreaders. Hope this helps I dealt with this a few times now its not fun.